摘要
研究了用ＭｎＣＯ３粉末和Ｍｎ（ＮＯ３）２溶液两种掺杂方式引入受主Ｍｎ的ＢａＴｉＯ３半导体材料的宏观性能和显微结构。指出用Ｍｎ（ＮＯ３）２溶液二次掺杂能使Ｍｎ更均匀有效地富集在晶界，可提高材料的升阻比、温度系数和耐压强度，且对性能参数作用效率高，影响敏感，并有利于制取低阻的ＰＴＣＲ陶瓷材料。
BaTiO 3 ceramics are doped in
two ways: with Mn(NO 3) 2 solution or M nCO 3 powers. The performances and micro structure of
BaTiO 3 ceramics doped in different way are investigated. The results show that doped with
Mn(NO 3) 2 solution two times, Mn will homogeneously concentrate around the grain boundary,
the resistance rising ratio, TC and withstand voltage will be increased, and the performances are
effectively improved. It is suitable for prepareing low resistance PTCR ceramics. (4 refs.)
出处
《电子元件与材料》
CAS
CSCD
1999年第3期19-21,共3页
Electronic Components And Materials
